Car stored over winter. 6-year old battery went dead and replaced with new one today. Charged up new battery, but still won't crank over engine. Is there something I'm missing here?

1) car stumbles at about 1500-2000rpm under load like its about to stall (sometimes does) also there is knocking coming from the valve train
2) does not happen in neutral
3) catalytic converters were replaced two weeks ago as were vacuum hoses (visable ones)
4) cleaned throttle body and removed debris from radiator screen
5) Air cleaner is in good condition

what is an ICM I here people talk about it have no clue what it is Larry

when it does start smells like it is flooded once when driving cut off an on and never did that again just started about 3 or 4 days ago when it got cold here in phoenix thanks Larry

I just bought the car a little over 2 months ago and was familiarizing myself with the car. I lifted the brake and released it but everytime I start the car and drive it the light on the dash remains illuminated

my service ride control light came on I checked shocks and they were all bad I replaced them when I hooked up my code scanner there was not a code the light is still on and I cant clear it with my scanner how do I clear the light

the only way i can get the ac to kick in is to ground the low pressure wire it wont kick in by jumping across the wires coming to the switch i can ground the green wire and it will kick the compressor in

what do i have to do to get the heat and ac control out of the dash

less than often i will turn the ignition and will get nothing not even a click all lights and everything else works brand new starter, batt, does not happen often then 5 or 10 minutes later will start like nothing was ever wrong very frustrating am afraid to shut engine off some times. could be after it sits for 10 minutes or 8 hours automatic trans Larry F. junkman5301@q.com

within the last 12 months or so I have had my brake booster replaced 4 times the 1st 3 times pedal was as hard as a rock had to stand on with 2 feet to stop the last time master leaked back into booster and ate the seals so I replaced master and booster this time and worked great for 12 days and now pedal hard as rock again and very scary trying to stop car a mechanic did do the work besides faulty parts any ideas? anyone?? original booster worked for 18 years have been around cars my whole just don't get it Larry F. junkman5301@q.com

motor makes sound nothing happens, can find any manual releases...car is new to us please help

Driving my vette is a great blast but recently I have noticed that the oil pressure drops at idle back to around 20-30 psi. The car has 97,000 mi. and is still a very strong car.
I have owned the car for 8 years and the oil pressure has always been steady around 40-60 at idle. The car does not smoke and runs out well.

Whats UP!!!!

how do i reset the passkey system for a 1992 corvette

when I drive my corvette for around an hour the brake pedal becomes very hard and the brakes seen to apply themselves lightly, when I stop on an upgrade the car will not roll freely, as if I am holding the brakes. The car is a manual transmission. I don't know if I have a brake adjustment problem or a master cylender problem or just what is going on any help would be appreciated.